QuickHelper

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About QuickHelper

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Teaching Since: May 2017
Last Sign in: 352 Weeks Ago, 5 Days Ago
Questions Answered: 20103
Tutorials Posted: 20155

Education

  • MBA, PHD
    Phoniex
    Jul-2007 - Jun-2012

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  • Corportae Manager
    ChevronTexaco Corporation
    Feb-2009 - Nov-2016

Category > Math Posted 25 Aug 2017 My Price 14.00

Calculas Questions

6. An person is standing on an island that is 0.5 kilometers away from a

straight shoreline. A car is driving at a constant speed of 1.5 kilometers per minute along a highway that extends along the shoreline, and the person on the island observes the car with a pair of binoculars.

 

(a) How fast is the distance between the island observer and the car changing when the car and the observer are 1 km apart?

(b) How fast must the observer rotate his head to keep the car in sight at the moment when he and the car are 1 km apart?

: On Problem 7 below, the formula for a cone of base radius r and height h is V = 1Ï€r2h. 3

Note that, by the given information, the height of the cone is 4 times the radius, so r = h . This 4

problem is very similar to problem 25 in section 4.1 of your textbook, a practice problem. You might want to do the practice problem first, and then look at the solution in the solutions manual on reserve in the library.

7. Gravel is being dumped from a conveyor belt at a rate of 10 m3/min, and its coarseness is such that it forms a pile in the shape of a right, circular cone whose height is twice its base diameter. How fast is the height of the pile increasing when the pile is 2 meters high?

Answers

QuickHelper
(10)
Status NEW Posted 25 Aug 2017 03:08 PM My Price 14.00

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